A blind man went for a job in a wood yard saying he could identify any wood by its smell.
They tested him on different types and he guessed right every time.
To try and catch him out, the secretary laid naked on the floor with her legs open.
He sniffed and said he wasn't sure. He asked for the 'wood' to be turned over, then sniffed again.
"You can't fool me” he said. “It's an old sh!t house door off a fishin' boat”!.